Physics NotePublished
Systematic Approach to Critical Phenomena by the Extended Variational Method and Coherent-Anomaly Method
Naoki Kawashima; Makoto Katori; C. Tsallis; Masuo Suzuki
1989
Publication details
- Authors
- Naoki Kawashima; Makoto Katori; C. Tsallis; Masuo Suzuki
- Type
- Physics Note
- Status
- Published
- Publication date
- 1989
- Description
- A general procedure to study critical phenomena of magnetic systems is discussed. It consists of systematic series of Landau-like approximations (Extended Variational Method) and the coherent-anomaly method (CAM). As for susceptibility, the present method is equivalent to the power-series CAM theory. On the other hand, the EVM gives a set of new approximants for other physical quantities. Applications to d-dimensional Ising ferromagnets are also described. The critical points and exponents are estimated with high accuracy.
- Year
- 1989
- Number
- CBPF-NF-038/89
- Linked to a thesis
- No
- Linked to a grant
- No